noun
- a crust or coating of small crystals, typically of quartz or other minerals, formed on the surface of a rock or mineral specimen
Usage: geology; mineralogy
Examples
- The geologist examined the druse of amethyst crystals covering the interior of the geode.
- A thin druse of quartz sparkled under the museum's display lights.
- Collectors prize mineral specimens with a well-formed druse of colorful crystals.
- The druse on this rock sample indicates it formed in a mineral-rich environment.
- Under magnification, the druse revealed tiny, perfectly formed crystal structures.